Aqua Medic OceanLight T5 HO (High Output) - 6x39W is a super-flat Aquarium T5 System which has two seperately switchable T5 circuits, plus seperately switchable LED moonlights. The aluminum housing is powder coated, it is supplied with two mounting options – for top aquarium mount as well as with our Aqua Medic aquafit hanging system. The high performance reflectors ensure highly efficient light output.